In order to optimize the energy consumption and efficiency of solar-ground source heat pump air conditioning system and reduce the influence of environmental factors on stable operation,we propose an adaptive fuzzy PID compound control method.The field data signal is collected by monitoring the management of the upper machine,sending down the switch signal to the PLC controller,and then the solar collector,circulating water pump and temperature are controlled by the PLC controller.At the same time,the fuzzy PID controller is used as a subroutine to control the frequency of the circulating water pump,and the temperature error and error change rate are used as the input of the composite controller,we adjust the relevant parameters of PID control,and output the signal for controlling the frequency of the frequency converter to regulate the running speed of the water pump motor and accurately control the indoor temperature by fuzzy processing.The experimental results show that this method can improve the utilization rate of solar energy with good anti-interference performance,high refrigeration and heating performance coefficient,and can achieve high energy-saving effect.
关键词
太阳能/地源热泵式空调/自适应/模糊PID复合控制/变频器/热泵机组
Key words
Solar energy/ground source heat pump air conditioning/adaptive/fuzzy PID compound control/frequency converter/heat pump unit
维普
万方数据